I hope they *don't* put a magnesium body, so that if I buy a 60D I don't have to deal with all the comments from the silly status-driven photo snobs.
I mean seriously, the make or break point isn't whether the camera is actually sturdy, but whether it "feels sturdy"? Like someone else said, if they make guns out of "plastic", I'm sure they can do it with a camera body.
I mean you can buy what you want, but if that's your make-or-break point clearly there's not really any significant differences between cameras any more. It's like buying one car over another because you like the color of the LED on the stereo. You're free to do that, but if you're sensible at all what it really means is that both cars are reliable, fuel efficient, accelerate well enough, etc already, and the only real differences are small tiny details.
I've seen the same thing happen with cell phones - "it feels like a toy"..."So you'd rather carry around more weight, that doesn't do anything, so it *feels* more sturdy?"..."Yes". Personally, I'd rather that it be lighter so it's easier to carry around.